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(N0 Model.)

G. 0. BOYNTON & G. STEPHEN.

TOP ROLL FOR SPINNING'MAUHINES, &c. No. 321,574. Patented July 7, 1885.

lu. m, W W was when STATES PATENT @rrrca GEORGE O. BOYNTON AND GEORGE- STEPHEN, OF BOSTON MASS. ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE LEATHEROID NOVELTY COMPANY.

TOP ROLL FOR SPINNING- 'MACHINES, 84,0.

SPECIFICATION forming part of Letters Patent ITO. 321,574, dated July '7. 1835.

Application filed October 27, 1883. (no model.)

To aZZ whom, it may concern.-

Be it known that we, GEORGE 0. BOYNTON and G-nonon- STEPHEN, of Boston, in the State of Massachusetts, have invented certain new and useful Improvements in Top Rolls for Spinning-h'lachines, 850., of which the following is a full, clear, and exact description.

This invention relates to top rolls for spinning machines or preparatory machines for spinning; and it consists of a shell for the top roll of spinning-machines or preparatory machines for spinning covered with pulp suitable for making paper, all substantially as hereinafter fully described and shown.

In the accompanying plate of drawings this invention is illustrated.

Figure 1 represents in perspective the usual shell of a top roll for spinning covered according to this invention; Fig. 2, a longitudinal section, and Fig. 3 a cross section, of Fig. 1.

1n the drawings, A represents the usual shell of a top roll, and B this improved covering on the outside thereof. This covering is made and prepared as follows: Take of any suitable paper-pulp, wood pulp being preferable, onehundred (100) pounds and put it into asuitable kettle or vessel with sufficient water to cover the pulp, and, placing the kettle over the fire, boil the same for about ten (10) hours, adding water from time to time as the water evaporates or is boiled away; also, take of borax five (5) pounds and shellac five (5) pounds, and, putting the two into another suitable vessel with about two (2) quarts of water, boil the whole until it is clear or the borax and the shellac are thoroughly dissolved, the borax facilitating the dissolution of the shellac, which requires about fifteen (15) minutes. Then for a sizing take of sodaash five (5) pounds, of resin five (5) pounds, and of water about two (2) quarts, and, placing all in another suitable vessel, boil all together until all the resin is taken up by the soda-ash, which generally takes from five (5) to six (6) hours. Then pour off the water from the kettle containing the pulp, and also onpress from the pulp its surplus water in any suitable manner, and put the pulp into the ket tlc or any suitable vessel, add to the same the compound of borax and shellac, and mix the whole thoroughly together, and when so mixed add the above sizing of soda-ash and resin, and again thoroughly min the whole together in a warm condition, when the pulp thus prepared is ready to be applied to the shells of the rolls, which can be done in any suitable manner, or as follows: One way is to press the prepared pulp in suitable molds, to make it of a tubular form of the length desired, and

dry in or out of the mold, as desired. The mold leaves the surface of the pulp covering suflt ciently smooth for use in the spinning-machine; but, if desired, it can be turned in a lathe as smooth as desired, and also to the size or diameter required,wlien it is ready for 7 5 use in the spinning-machine, d e. The borax serves to make the surface of the covering fine and smooth, also increasing the elasticity of the pulp. The shellac serves to increase the coherency, and the size made of soda-ash and resin serves to raise and separate the fibers of pulp from each other, so that when pressing the pulp in the mold the water will be the easier and more thoroughly removed,

and the'fibers of the pulp will be the more easily and regularly laid, the covering obviously being stronger and more durable.

A covering for spinning and other rolls made of the materials herein described has many advantages over rolls covered with 0 leather or other material as at present used, as this covering is elastic and yet firm, will not wear easily, is very durable, will not be affected by the atmosphere or moisture, is agood non-conductor of electricity, and when worn or uneven on its surface from use or from any cause it can be turned and trued in a lathe, making it as good as new, and thus it can be turned and trued until entirely used up, and as it can be applied in any thickness 10;

Another way is to 65 desired the diameter of the shell can be somewhat reduced, making it lighter,which is very desirable.

It is preferable in boiling the pulp and the other articles herein mentioned to use a steamjacketed kettle, as such will prevent their being burned.

The proportion of the several ingredients can be varied more or less from those stated without departing from this invention; but the proportions herein given produce good, practical, and satisfactory results.

The covering can be secured to the shell in any suitable manner, the invention not being limited to any particular mode of applying the covering, although it should be applied aid secured to the shell in a manner to firmly secure it thereto.

It is desirable when molding the pulp, as described, that considerable pressure be used in order to make the pulp close, compact, and in a firm condition, but with care, however,

so as not to destroy all theelasticity of the p having thus described our invention, what we claim is 1. A roll for spinning or other machines, the covering of which is made of paper-pulp, in combination with borax, shellac, and a sizing, for the purpose specified.

2. A roll for spinning or other machines, the covering of which is made of paper-pulp, in combination with boraX, shellac, and a sizing made of soda-ash and resin, for the pur pose specified.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

' GEoEGE o. BOYNTON.

.GEoEGE STEPHEN.

Witnesses:

EDWIN W. BROWN, WM. S. BnLLows. 

